﻿//////////////////////////////////////////////////////////////////////////
/*
Copyright (c) 2011-2015 Kaiming Yi
	
	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:
	
	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.
	
	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
	
*/
//////////////////////////////////////////////////////////////////////////



/* CpuArch.h -- CPU specific code
2010-10-26: Igor Pavlov : Public domain */

#ifndef __CPU_ARCH_H
#define __CPU_ARCH_H

#include "Types.h"

EXTERN_C_BEGIN

/*
MY_CPU_LE means that CPU is LITTLE ENDIAN.
If MY_CPU_LE is not defined, we don't know about that property of platform (it can be LITTLE ENDIAN).

MY_CPU_LE_UNALIGN means that CPU is LITTLE ENDIAN and CPU supports unaligned memory accesses.
If MY_CPU_LE_UNALIGN is not defined, we don't know about these properties of platform.
*/

#if defined(_M_X64) || defined(_M_AMD64) || defined(__x86_64__)
#define MY_CPU_AMD64
#endif

#if defined(MY_CPU_AMD64) || defined(_M_IA64)
#define MY_CPU_64BIT
#endif

#if defined(_M_IX86) || defined(__i386__)
#define MY_CPU_X86
#endif

#if defined(MY_CPU_X86) || defined(MY_CPU_AMD64)
#define MY_CPU_X86_OR_AMD64
#endif

#if defined(MY_CPU_X86) || defined(_M_ARM)
#define MY_CPU_32BIT
#endif

#if defined(_WIN32) && defined(_M_ARM)
#define MY_CPU_ARM_LE
#endif

#if defined(_WIN32) && defined(_M_IA64)
#define MY_CPU_IA64_LE
#endif

#if defined(MY_CPU_X86_OR_AMD64)
#define MY_CPU_LE_UNALIGN
#endif

#if defined(MY_CPU_X86_OR_AMD64) || defined(MY_CPU_ARM_LE)  || defined(MY_CPU_IA64_LE) || defined(__ARMEL__) || defined(__MIPSEL__) || defined(__LITTLE_ENDIAN__)
#define MY_CPU_LE
#endif

#if defined(__BIG_ENDIAN__)
#define MY_CPU_BE
#endif

#if defined(MY_CPU_LE) && defined(MY_CPU_BE)
Stop_Compiling_Bad_Endian
#endif

#ifdef MY_CPU_LE_UNALIGN

#define GetUi16(p) (*(const UInt16 *)(p))
#define GetUi32(p) (*(const UInt32 *)(p))
#define GetUi64(p) (*(const UInt64 *)(p))
#define SetUi16(p, d) *(UInt16 *)(p) = (d);
#define SetUi32(p, d) *(UInt32 *)(p) = (d);
#define SetUi64(p, d) *(UInt64 *)(p) = (d);

#else

#define GetUi16(p) (((const Byte *)(p))[0] | ((UInt16)((const Byte *)(p))[1] << 8))

#define GetUi32(p) ( \
             ((const Byte *)(p))[0]        | \
    ((UInt32)((const Byte *)(p))[1] <<  8) | \
    ((UInt32)((const Byte *)(p))[2] << 16) | \
    ((UInt32)((const Byte *)(p))[3] << 24))

#define GetUi64(p) (GetUi32(p) | ((UInt64)GetUi32(((const Byte *)(p)) + 4) << 32))

#define SetUi16(p, d) { UInt32 _x_ = (d); \
    ((Byte *)(p))[0] = (Byte)_x_; \
    ((Byte *)(p))[1] = (Byte)(_x_ >> 8); }

#define SetUi32(p, d) { UInt32 _x_ = (d); \
    ((Byte *)(p))[0] = (Byte)_x_; \
    ((Byte *)(p))[1] = (Byte)(_x_ >> 8); \
    ((Byte *)(p))[2] = (Byte)(_x_ >> 16); \
    ((Byte *)(p))[3] = (Byte)(_x_ >> 24); }

#define SetUi64(p, d) { UInt64 _x64_ = (d); \
    SetUi32(p, (UInt32)_x64_); \
    SetUi32(((Byte *)(p)) + 4, (UInt32)(_x64_ >> 32)); }

#endif

#if defined(MY_CPU_LE_UNALIGN) && defined(_WIN64) && (_MSC_VER >= 1300)

#pragma intrinsic(_byteswap_ulong)
#pragma intrinsic(_byteswap_uint64)
#define GetBe32(p) _byteswap_ulong(*(const UInt32 *)(const Byte *)(p))
#define GetBe64(p) _byteswap_uint64(*(const UInt64 *)(const Byte *)(p))

#else

#define GetBe32(p) ( \
    ((UInt32)((const Byte *)(p))[0] << 24) | \
    ((UInt32)((const Byte *)(p))[1] << 16) | \
    ((UInt32)((const Byte *)(p))[2] <<  8) | \
             ((const Byte *)(p))[3] )

#define GetBe64(p) (((UInt64)GetBe32(p) << 32) | GetBe32(((const Byte *)(p)) + 4))

#endif

#define GetBe16(p) (((UInt16)((const Byte *)(p))[0] << 8) | ((const Byte *)(p))[1])


#ifdef MY_CPU_X86_OR_AMD64

typedef struct
{
  UInt32 maxFunc;
  UInt32 vendor[3];
  UInt32 ver;
  UInt32 b;
  UInt32 c;
  UInt32 d;
} Cx86cpuid;

enum
{
  CPU_FIRM_INTEL,
  CPU_FIRM_AMD,
  CPU_FIRM_VIA
};

Bool x86cpuid_CheckAndRead(Cx86cpuid *p);
int x86cpuid_GetFirm(const Cx86cpuid *p);

#define x86cpuid_GetFamily(p) (((p)->ver >> 8) & 0xFF00F)
#define x86cpuid_GetModel(p) (((p)->ver >> 4) & 0xF00F)
#define x86cpuid_GetStepping(p) ((p)->ver & 0xF)

Bool CPU_Is_InOrder();
Bool CPU_Is_Aes_Supported();

#endif

EXTERN_C_END

#endif
